68
RECTIFYING
OR
AVOIDING
PROBLEM
AREAS
OBSTACLES
SUCH
AS
TREE
ROOTS
ON
LAWN
If
a
tree
root
is
protruding
into
the
perimeter
of
your
cutting
area
it
would
present
a
problem
for
the
mower.
One
solution
is
to
take
the
perimeter
around
the
tree
root,
leaving
this
area
unmowed.
Alternatively,
remove
the
tree
root
and
fill
any
resulting
uneven
surface,
then
set
the
perimeter
over
it.
EXCESSIVELY
UNEVEN
AREAS
OF
LAWN
A
deep
enough
dip
in
the
surface
of
your
lawn
will
also
present
problems,
possibly
causing
the
mower“s
wheels
to
lose
their
grip
and
skid.
If
you
don“t
want
to
avoid
mowing
this
area,
it“s
best
to
fill
it
with
soil,
compact
it
down
and
re
‐
seed
it
with
grass.
If
the
area
is
on
the
perimeter
line
this
can
be
pegged
out
as
normal.
If
it
is
within
the
mowing
area
it
should
no
longer
be
a
problem.
If
your
mower
encounters
particularly
long
grass
it
may
treat
it
as
an
obstacle
as
it
could
bump
the
mower“s
obstacle
sensor.
The
grass
needs
to
be
at
a
reasonable
level
before
the
Robot
Mower
can
function
correctly.